Vulnerabilities / CVE-2026-118646

CVE-2026-118646

Published 2026-10-28 · published (not yet in NVD)

CVE-2026-118646

n8n before 1.123.85, 2.43.5, and 2.44.1 ReDoS via Read/Write Files Node

7.1 HIGH
CVSS 4.0 · CNA

0.2%
chance of exploitation in the next 30 days (EPSS; higher than 16% of CVEs)

n8n before 1.123.85, 2.43.5, and 2.44.1 contains a regular expression denial of service vulnerability that allows authenticated members to block the event loop via crafted glob patterns. Attackers who can create and run workflows can submit a wildcard-heavy File(s) Selector pattern causing exponential backtracking, making the UI, API, webhooks, and health checks unresponsive until restart.

Scores

7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCNA

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCNA

Affected products

n8n-io n8n: < 1.123.85
n8n-io n8n: 2.44.0 to < 2.44.1
n8n-io n8n: 2.0.0 to < 2.43.5

Weakness: CWE-1333

Also known as: GHSA-m7gv-mpg5-7c9v

2 references (advisories, patches, write-ups)

https://github.com/n8n-io/n8n/security/advisories/GHSA-m7gv-mpg5-7c9v · vendor-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-redos-via-read-write-files-node · third-party-advisory

Sources: CVE.org, OSV.dev, FIRST EPSS. Missing ones did not answer or have no record yet.

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